Scow for transporting gravel and the like.



T. G. JACKSON.

scow FOR TRANSPORTING GRAVEL AND THE LIKE.

1,018,566. APPLICATION FILED O0T.l3, 1911. Patented Feb. 27,

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH CD.,'.'\$r\|NOTON. D. c.

T. c. JACKSON.

SCOW FOR TRANSPORTING GRAVEL AND THE LIKE.

APPLICATION FILED 0'0T.13. 1911. 1,018,566. Patented Feb. 27, 1912.

2 SHEETS-411E131 2.

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THOMAS C. JACKSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-THIRD T0 ROSEJ. A.

SHANKS, OF CHICAGO, ILLINOIS.

SCOW FOR TRANSPORTING GRAVEL AND THE LIKE.

Specification of Letters Patent.

Application filed October 13, 1911.

Patented Feb. 2'7, 1912. Serial No. 654,453.

To all whom it may concern:

Be it known that I, THOMAS C. JAoKsoN. a citizen of the UnitedStates,and a resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Scowsfor' Transporting Gravel and the Like; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the characters ofreference marked thereon, which form a part of this specification.

This invention relates to a novel scow or boat for transporting gravel,or gravel and sand, loaded thereon from the bottom of a lake or otherbody of water, and the invention relates more specifically to means forreceiving the material in the compartments of the scow so as to gradethe material in predetermined meshes, or to return the material which isof too fine a mesh for use back to the bottom of the body of water fromwhich it was taken.

The invention consists in the matters hereinafter set forth and moreparticularly pointed out in the appended claims.

In the drawings,-Figure 1 is a plan view of a scow equipped with myinvention; Fig. 2 is a transverse section thereof; Fig. 3 is afragmentary plan view, partly broken away, of the screen equipment ofone compartment and portions thereof of adjacent compartments; Fig. 4 isan enlarged detail section on the line 4-4 of Fig. 2; Fig. 5 is aperspective view of one of the screen units or boxes. Fig. 6 is anenlarged section through one of the bulk heads between compartments,showing the brackets for supporting the screens.

The scow 10 may be of any suitable or preferred construction or design,and is herein shown as a self-propelling scow, with its propelling powerplant 11 located at the pilot house 12 located near the bow.

Disposed along the longitudinal center of the scow are a plurality ofcompartments 15, 15, seven being herein shown, which are by thetransverse of the compartments at the bottom thereof. Said doors, whenswung upwardly to the dotted line position shown in Fig. 2, constitutethe bottoms of the compartments, and when released swing down to thefull line position shown in Fig. 2 to permit the contents of thecompartments to be dumped. The doors are held in their upper or closedpositions by the chains 19 that are trained about the lifting windlasses20, 20 at the sides of the compartments at the dock level of the scow.

Located above and at the sides of the compartments are flumes 22, 22through which the mixture of water, gravel and sand is distributed tothe several compartments, each fiume being provided over eachcompartment with discharge openings 23, through which the mixture fallsfrom the flumes to the compartments below. The mixture of water, graveland sand is discharged into said flumes through the usual sucker pipes25 at the sides of the scow and the pumps 26 which are located midshipsat'the sides of the compartments 15. The outlet pipes 27, 27 of saidpumps discharge centrally into the flumes through the openings 28. Theengines 29, which operate said pumps, may receive steam from the boilersof the propelling power plant when p the scow is self-propelled.

The construction just described constitutes, in itself, no part of thepresent invention, although my improvements are very advantageouslyadapted to said construction. The mixture of gravel, sand and water isdischarged centrally into the flumes, from which the central compartmentis first filled, after which the compartments toward the ends of the theusual manner.

The present invention relates to a peculiar form of screen equipment forscreening or grading the gravel which is loaded into the compartments ofthe scow and for supporting the graded material. In my application forU. S. Letters Patent, filedof even date herewith, Serial No. 654,452, Ihave shown a screen equipment for the same purpose wherein each screenof each compartment is a plain screen, and in such construction thegraded material is required to be removed by a shovel or like device. Inthe construct-ion exemplifying my present invention I propose to makeeach screen scow are gradually filled, in

to each box of the upper set plane of a number of box-like units, withthe units nested and supported in the compartments in such a way thatthe units may be separately inserted into place in the compartment andbe separately and independently removed when loaded. Thus the unloadingof the scow is facilitated. The units or boxes may be lifted from thescow and the contents thereof dumped, or the units may be loaded uponsuit-able vehicles and transported thereon to a place where the gravelis to be used. As herein shown each compartment is provided with threesets of screen boxes, 40, 41 and 42, and the bottom walls, 43, 44 and45, respectively, of said boxes are perforated to constitute the screenplanes of the compartments. The size of the openings or mesh of theperforated box bottoms are graduated from the upper to the lower boxes,the bottoms of the upper boxes having the largest perforations, those ofthe lowermost boxes having the smallest perforations, while theperforations of the bottoms of the intermediate boxes are of a diameterintermediate those of the upper and lower boxes. As herein shown, thereare four boxes in each set, and the boxes of each set are arranged sideby side and extend transversely across the compartments. When the boxesor units are thus arranged the flumes 22 are located laterally outsidethe planes of the sides of the compartments, and the discharge planes 23are at the inner sides of the fiumes, so as to provide clearance spacebetween the flumes for the removal and insertion of the screen boxes.The contents of the flumes may be discharged over the inclined aprons 23at said openings, to direct the material from the flumes into the boxes.Said boxes may be thus supported in superposed sets in the compartmentsin any suitable manner. As herein shown they are supported on beams 47that extend longitudinally of the compartments, and said beams aresupported at their ends on brackets 47, having the form of angle orZ-bars, that are attached to the bulk heads 16, as

best shown in Figs. 2, 3 and 6. These boxsupporting beams are removablysupported on said brackets, so that they may be removed, togetherwiththe boxes, to clear the compartment spaces when the scow is to beused as an ordlnary dumping scow,

or for hauling gravel in the usual manner. When the screen boxes-arearranged in sets to extend transversely across the compartments, theflumes are provided opposite to each box of theupper set with thedischarge openings 23, as indicated in Fig. 4, so that the material mayflow freely from the flumes of screen boxes. The invention, in itsbroadest aspect, is not limited, however, to the particular manner shownof nesting and supporting the screen or to the particular manner shownof directing the mix ture of water, sand and gravel to the screen boxes.

- The spaces between the adjacent sides of the upper screen boxes may beclosed to prevent material escaping through said spaces and directly tothe water beneath the nestedscreen boxes. The closing of said spaces maybe effected by the channel pieces 50, shown in Figs. 3 and 5, which aremade of a width to be removably fitted over the upper margins of theside walls of adjacent boxes.

The vertical side and end walls of the boxes are preferably perforated,as shown in Figs. 2 and 5, to facilitate the escape of water from thematerial that is deposited on said screens and in said boxes. Thedimensions of the perforations in the vertical walls of each box is lessthan that of the perforations of the screen bottom of the box, so as toprevent the escape of material through the side perforations of a meshintended to be intercepted by the bottom perforations.

The screen boxes are provided at their end walls with lugs or rings,located preferably on the inner sides of said walls, which afford meansadapted for engagement by lifting hooks or the like to lift the boxesout of the compartments.

I claim- 1. A scow having an open compartment, and a plurality ofseparately removable screen boxes nested in said compartment andsupported on the side walls thereof, the bottoms of said boxes beingperforated to constitute a screen support.

2. A scow having an open compartment and a plurality of separatelyremovable screen boxes nested in said compartment and supported on theside walls thereof, the bottoms of said boxes being perforated toconstitute a screen support, and the side walls of said boxes being alsoperforated to permit the escape of the water therethrough.

3. A scow having an open compartment, a plurality of removably supportedsuperposed sets of screen boxes extending across the compartment, thebottoms of which are.

perforated to constitute superposed screen planes.

4. A scow having an open compartment, a plurality of superposed sets ofscreen boxes, the bottoms of which areperforated to constitutesuperposed screen planes, means for removably supporting said screenboxes in the compartment, and means extending across the spaces betweenthe sides of the top set of boxes to prevent material falling betweensaid boxes.

5. A scow having an open compartment, a plurality of superposed sets ofscreen boxes, the bottoms of which are perforated to constitutesuperposed screen planes,

brackets on the side Walls of the compartments, and beams supported onsaid brackets and extending beneath and supporting said screen boxes.

6. A scow provided With a longitudinally arranged series of opencompartments, a longitudinal flume arranged at the side and above thecompartments and a plurality of separately removable screen boxes nestedand removably supported in said compartments, the bottoms of said boxesbeing perforated to constitute a screen support.

7. A scow provided with a longitudinally arranged series of opencompartments a longitudinal fiume arranged at the side and above thecompartments and a plurality of sets of superposed screen boxesextending across the compartments, the loWer Walls of which boxes areperforated to constitute superposed screens of graduated mesh from topto bottom, said fiume being provided With outlet openings to dischargeinto the screen boxes.

In testimony, that I claim the foregoing as my invention I aflix mysignature in the presence of tWo Witnesses, this 5th day of October A.D. 1911.

THOMAS C. JACKSON. lVitnesses:

GERTRUDE E. DOWLE, WILLIAM L. HALL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

